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| 型號(hào)： | AD5762RCSUZ-REEL7 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | DAC |
| 英文描述： | Complete Dual, 16-Bit, High Accuracy, Serial Input, Bipolar Voltage Output DACs |
| 中文描述： | SERIAL INPUT LOADING, 8 us SETTLING TIME, 16-BIT DAC, PQFP32 |
| 封裝： | ROHS COMPLIANT, PLASTIC, MS-026ABA, TQFP-32 |
| 文件頁數(shù)： | 29/33頁 |
| 文件大小： | 507K |
| 代理商： | AD5762RCSUZ-REEL7 |
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Preliminary Technical Data
AD5762R
APPLICATIONS INFORMATION
TYPICAL OPERATING CIRCUIT
Figure 42 shows the typical operating circuit for the AD5762R.
The only external components needed for this precision 16-bit
DAC are decoupling capacitors on the supply pins and reference
inputs, and an optional short-circuit current setting resistor.
Because the AD5762R incorporates a voltage reference and
reference buffers, it eliminates the need for an external bipolar
reference and associated buffers. This leads to an overall savings
in both cost and board space.
Rev. PrA | Page 29 of 33
In Figure 42, V
DD
and V
SS
are both connected to ±15 V, but V
DD
and V
SS
can operate with supplies from ±11.4 V to ±16.5 V. In
Figure 42, AGNDA and AGNDB are connected to REFGND.
1
2
3
4
5
6
7
8
23
22
21
18
19
20
24
17
9
10 11
12
13
14 15
16
32
31
30
29
28
27
26
25
AD5762R
SYNC
SCLK
SDIN
SDO
D0
LDAC
CLR
D1
NC
VOUTA
AGNDA
NC
VOUTB
AGNDB
NC
NC
R
R
D
D
C
A
D
P
A
S
I
B
A
A
T
R
R
R
R
SYNC
SCLK
SDIN
SDO
LDAC
D0
D1
RSTOUT
RSTIN
BIN/2sCOMP
+5V
+5V
+15V
–15V
+15V –15V
VOUTB
VOUTA
100nF
1
1
10μF
100nF
100nF
10μF
10μF
1
TEMP
1
10μF
Figure 42. Typical Operating Circuit
Precision Voltage Reference Selection
To achieve the optimum performance from the AD5762R over
its full operating temperature range, an external voltage
reference must be used. Thought should be given to the
selection of a precision voltage reference. The voltage applied to
the reference input is used to provide a buffered positive and
negative reference for the DAC cores. Therefore, any error in
the voltage reference is reflected in the outputs of the device.
There are four possible sources of error to consider when
choosing a voltage reference for high accuracy applications:
initial accuracy, temperature coefficient of the output voltage,
long term drift, and output voltage noise.
Initial accuracy error on the output voltage of an external refer-
ence could lead to a full-scale error in the DAC. Therefore, to
minimize these errors, a reference with low initial accuracy
error specification is preferred. Choosing a reference with an
output trim adjustment, such as the ADR425, allows a system
designer to trim system errors out by setting the reference
voltage to a voltage other than the nominal. The trim ad-
justment can also be used at temperature to trim out any error.
Long term drift is a measure of how much the reference output
voltage drifts over time. A reference with a tight long-term drift
specification ensures that the overall solution remains relatively
stable over its entire lifetime.
The temperature coefficient of a reference’s output voltage
affects INL, DNL, and TUE. A reference with a tight
temperature coefficient specification should be chosen to
reduce the dependence of the DAC output voltage on ambient
conditions.
In high accuracy applications, which have a relatively low noise
budget, reference output voltage noise needs to be considered.
Choosing a reference with as low an output noise voltage as
practical for the system resolution required is important.
Precision voltage references such as the ADR435 (XFET design)
produce low output noise in the 0.1 Hz to 10 Hz region.
However, as the circuit bandwidth increases, filtering the output
of the reference may be required to minimize the output noise.
Table 18. Some Precision References Recommended for Use with the AD5762R
Part No.
Initial Accuracy(mV Max)
Long-Term Drift (ppm Typ)
ADR435
±6
30
ADR425
±6
50
ADR02
±5
50
ADR395
±6
50
AD586
±2.5
15
Temp Drift (ppm/°C Max)
3
3
3
25
10
0.1 Hz to 10 Hz Noise (μV p-p Typ)
3.4
3.4
15
5
4
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| AD5763 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Complete Dual, 16-Bit, High Accuracy, Serial Input, ±5V DACs |
| AD5763BSUZ | 制造商:AD 制造商全稱:Analog Devices 功能描述:Complete Dual, 16-Bit, High Accuracy, Serial Input, ±5V DACs |
| AD5763CSUZ | 功能描述:DAC 16BIT DUAL 5V 2LSB 32-TQFP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 設(shè)置時(shí)間:4.5µs 位數(shù):12 數(shù)據(jù)接口:串行，SPI? 轉(zhuǎn)換器數(shù)目:1 電壓電源:單電源 功率耗散（最大）:- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SOICN 包裝:剪切帶 (CT) 輸出數(shù)目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:* 其它名稱:MCP4921T-E/SNCTMCP4921T-E/SNRCTMCP4921T-E/SNRCT-ND |
| AD5763CSUZ-REEL7 | 功能描述:DAC 16BIT DUAL 5V 2LSB 32-TQFP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:Data Converter Fundamentals DAC Architectures 標(biāo)準(zhǔn)包裝:750 系列:- 設(shè)置時(shí)間:7µs 位數(shù):16 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 電壓電源:雙 ± 功率耗散（最大）:100mW 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-LCC（J 形引線） 供應(yīng)商設(shè)備封裝:28-PLCC（11.51x11.51） 包裝:帶卷 (TR) 輸出數(shù)目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:143k |
| AD5763CSUZ-TR | 制造商:Analog Devices 功能描述:16BIT +/-5V DUAL 1LSB - Tape and Reel |
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